Architectural engineering pencil sharpener



June 7, 1966 T. TUFAN ARCHITECTURAL ENGINEERING PENCIL SHARPENER FiledApril 25,. 1964 2 Sheets-Shae! 1 INVENTOR. 7&[42 1 747 220 A7TURNE 5.

June 7, 1966 T. TUFAN ARCHITECTURAL ENGINEERING PENCIL SHARPENER FiledApril 25. 1964 2 Sheets-Sheet 2 INVENTOR. 751/622 7Z1 an ATTURNE 5.

United States Patent 3,254,630 ARCHITECTURAL ENGINEERING PENCILSHARPENER Talat Tufan, Brooklyn, N.Y., assignor to Zottos L. Papanidis,New York, N.Y.

Filed Apr. 23, 1964, Ser. No. 361,959 6 Claims. (Cl. 120-89) Thisinvention relates generally to pencil sharpeners and more particularlyto a combined pencil sharpener or pointer and refuse receptacle,especially designed to be used by draftsmen, architects, engineers andartists.

Ordinary pencil sharpeners or pointers when used freely liberategraphite dust which is variously scattered on the table, desk, floor,wastebasket, etc., causing soiling and smudging of everything itcontacts, including the hands of the user.

A primary object of the present invention is to provide a pencilsharpener or pointer of the enclosed character which is so shaped and solight in weight to permit it to be placed on top of a supporting surfaceconvenient to an individual user.

Another object of the invention is to provide a pencil sharpener orpointer of the character described which is capable of serving as areceptacle for pencil refuse and is provided with a trap chamber so asto retain the refuse in case it is accidentally turned upside down orupset.

A further object is to provide a pencil sharpener or pointer of thischaracter that can be readily emptied and cleaned.

It is also an object of the invention to provide a pencil sharpener orpointer of this character that is simple and rugged in construction andis economical to manufacture.

For further comprehension of the invention, and of the objects andadvantages thereof, reference will be had to the following descriptionand accompanying drawings, and to the appended claims in which thevarious novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

FIG. 1 is a top perspective view of a pencil sharpener and refusereceptacle embodying one form of the invention, the cover being shownremoved and a pencil being shown preparatory to being sharpened.

FIG. 2 is a cross-sectional view taken on the line 22 of FIG. 1, withthe cover in closed position.

FIG. 3 is an exploded perspective view thereof, parts of the containerbeing shown broken away.

FIG. 4 is a sectional view through the longitudinal center thereof, thecover being omitted.

FIG. 5 is a view similar to FIG. 1 of a pencil sharpener and refusereceptacle embodying a modified form of the invention.

FIG. 6 is a sectional view taken on the line 6-6 of FIG. 5.

FIG. 7 .is a view similar to FIG. 2 of the device of FIG. 5, parts beingshown broken away.

FIG. 8 is a top perspective view of a pencil sharpener or pointer andrefuse receptacle embodying another modified form of the invention,parts being shown detached.

FIG. 9 is a cross-sectional view taken on the line 99 of FIG. 8 showinga pencil preparatory to being sharp- Patented June 7, 1966 ICC centerthereof. The side and end walls define an open top which is adapted tobe closed by a closure plate 22 having a peripheral flange 24. Thehousing is rectangular in plan and maybe of any desired dimensions, butpreferably-is approximately 3%" long, 1%" high, 2%." wide at the bottomand 1%" wide at the top.

In accordance with the invention the sharpening and pointing mechanismis mounted at the top of the housing, interiorly thereof. This mechanismincludes a plurality of elongated rectangular-shaped metal plates 26disposed alongside of each other in slanting relationship and heldtogether against displacement by triangular-shaped bearing'platemembersZS, 28 interlocked to the ends of the plates 26 by means ofradial grooves 30 on the inner surfaces of the bearing members coactingwith reduced end edges 32 on the plates. Trunnions 34 extend outwardlyof cylindrical bases 36 secured to the centers of the hearing members onthe outer surfaces thereof by means of adhesive 38 or the like. Knobs orfinger pieces 40 are removably mounted on the free ends of thetrunnions.

On one side of, each plate 26, the surface thereof is covered with astrip of sandpaper 42 fastened thereon by suitable adhesive, and on theopposite side the surface is covered with a soft flexible strip 44 offelt or the like secured thereto by adhesive. The arrangement of theplates is such that a surface of sandpaper is disposed adjacent to asurface of felt as seen in FIG. 2 so that there is always a sharpeningsurface and a cleaning surface exposed.

In use, the exposed portion of the lead L of a pencil P is moved backand forth over the sandpaper 42 to sharpen and point the pencil. As thelead is sharpened the particles of lead gravitate into the trough formedby adjacent plates 26. Subsequently, the pencil is moved back and forthover the felt strip 44 so that the loosened particles will be brushed orwiped from the lead. The sharpening and pointing mechanism is thenrotated on V the trunnions 34 by means of one of the knobs 40 and theparticles of lead and shavings in the trough are dumped into theinterior of the housing or casing 12 and collected on the bottom wall14. The plates 26 are mounted within the housing or casing 12 and extendfrom end to end thereof and as such trap and retain all refuse depositedin the casing or housing if the casing or housing is upset.

The sharpening and pointing mechanism is removable as a unit by liftingit upwardly carrying the trunnions 34 out of the bearing notches 20.When the mechanism is removed, the casing and housing may be readilycleaned and emptied of the refuse collected.

The modified form of combined pencil sharpener or pointer and refusereceptacle 10' shown in FIGS. 5 to 7, inclusive, differs from the device10 in that the triangular-shaped bearing members 28 are held together bymeans of an elongated round shaft 50 extending through central holes 52therein and protruding outwardly thereof. The protruding ends 54 of theshaft are journalled in U-shaped bearing members 56 formed on the innersurface of the end walls 18' at the top center thereof.

pointer and refuse receptacle 10' is similar to device 10 r and similarreference numerals are used to indicate similar parts throughout.

Referring now to the modified form of pencil sharpener or pointer andrefuse receptacle 10 shown in FIGS. 8 and 9, this modification differsfrom device 10'- in that the bottom wall 14" is formed separately withwalls 16" and 18",

an upstanding flange 60 therearound. The side and end respectively, areformed integrally with each other and are supported on the bottom walloutwardly of the flange 60, the flange serving as a guide in positioningthe same. In this form, the side walls 16 terminate short of the top ofthe end walls 18".

A pair of downwardly slanting top walls 62, 62 are formed integrallywith the top edge of the side walls 16". The top walls extend downwardlyand inwardly into the interior of the casing to a point approximatelythe midheight of the casing, the free ends of said slanting top wallsbeing closely spaced from each other, providing a clearance 64 for theparticles of'lead and shavings to fall by gravity into the interior ofthe casing onto the bottom wall 14". The upper or outer surfaces of theslanting walls are recessed for their length as indicated at 66 andcovering the recesses are strips of sandpaper or files 68 removablysecured in place by adhesive 70.

In this form, the flanged bottom wall 14 serves as a tray for collectingthe particles of lead and shavings and when it is desired to clean andempty the tray, the side, end and top walls are lifted as a unit off ofthe bottom wall.

While I have illustrated and described the preferred embodiments of myinvention, it is to be understood that I do not limit myself to theprecise constructions herein disclosed and that various changes andmodifications may be made within the scope of the invention as definedin the appended claims.

Having thus described my invention, what I claim as new, and desire tosecure by United States Letters Patent 1s:

1. In a combined pencil sharpener and refuse receptacle, the combinationof a rectangular housing having bottom, side and end walls, said sideand end walls defining an open top, said end walls having notches in thetop edges thereof, an assembly of slanting rectangular plates rotatablymounted at the top of the housing interiorly thereof, said mountingincluding triangular plates on the ends of the rectangular plates forholding said rectangular plates together, and trunnions extending fromthe triangular .plates, said trunnions being journalled in the notchesin the top edges of the end walls, said slanting plates having abrasivesurfaces on one side, and means for rotating said assembly to dischargerefuse to the bottom of the housing.

2. In a combined pencil sharpener and refuse receptacle, the combinationof a rectangular housing having bottom, side and end walls, said sideand end walls defining an open top, said end walls having notches in thetop edges thereof, an assembly of slanting rectangular plates rotatablymounted at the top of the housing interiorly thereof, said mountingincluding triangular plates on the ends of the rectangular plates forholding said rectangular plates together, and trunnions extending fromthe triangular plates, said trunnions being journaled in the notches inthe top edges of the end walls, said slanting plates having abrasivesurfaces on one side, and means for rotating said assembly to dischargerefuse to the bottom of the housing, said assembly being removable as aunit from the housing.

3. In a combined pencil sharpener and refuse receptacle, the combinationof a rectangular housing having bottom, side and end walls, said sideand end walls defining an open top, said end walls having notches in thetop edges thereof, an assembly of slanting rectangular plates rotatablymounted at the top of the housing interiorly thereof, said mountingincluding triangular plates on the ends of the rectangular plates forholding said rectangular plates together, and trunnions extending fromthe triangular plates, said trunnions being journalled in the notches inthe top edges of the end walls, said slanting plates having abrasivesurfaces on one side, and means for rotating said assembly to dischargerefuse to the bottom of the housing, said assembly being removable as aunit from the housing, said rotating means including at least one knobon one of the trunnions outwardly of an end wall of the housing.

4. In a combined pencil sharpener and refuse receptacle, the combinationof a rectangular housing having bottom, side and end walls, said sideand end walls defining an open top, said end walls having notches in thetop edges thereof, an assembly of slanting rectangular plates rotatablymounted at the top of the housing interiorly thereof, said mountingincluding triangular plates on the ends of the rectangular plates forholding said rectangular plates together, and trunnions extending fromthe triangular plates, said trunnions being journalled in the notches inthe top edges of the end walls, said slanting plates having abrasivesurfaces on one side, and means for rotating said assembly to dischargerefuse to the bottom of the housing, said slanting plates having wipingfelt surfaces on the opposite sides thereof.

5. In a combined pencil sharpener and refuse receptacle, the combinationof a rectangular housing having bottom, side and end walls, said sideand end walls defining an open top, said end walls having notches in thetop edges thereof, an assembly of slanting rectangular plates rotatablymounted at the top of the housing interiorly thereof, said mountingincluding triangular plates on the ends of the rectangular plates forholding said rectangular plates together, and trunnions extending fromthe triangular plates, said trunnions being journalled in the notches inthe top edges of the end Walls, said slanting plates having abrasivesurfaces on one side, and means for rotating said assembly to dischargerefuse to the bottom of the housing, said assembly being removable as aunit from the housing, said rotating means including at least one knobon one of the trunnions outwardly of an end wall of the housing, saidslanting plates having wiping felt surfaces on the opposite sidesthereof.

6. In a combined pencil sharpener and refuse receptacle, the combinationof a rectangular housing having bottom, side and end walls, said sideand end walls defining an open top, an assembly of sharpening andcleaning plates rotatably mounted at the top of the housing interiorlythereof, said mounting including an elongated shaft, triangular plateson the ends of the shaft, the ends of the shaft projecting outwardly ofthe triangular plates, opposed V-shaped bearing members on the innersurfaces of the end walls centrally thereof at the top, the projectingends of the shaft journalled in said bearing members, said sharpeningand cleaning plates constituted by rectangularshaped plates secured atthe ends to said triangular-shaped plates in side-by-side and slantingrelationship, said slanting rectangular-shaped plates having abrasivesurfaces on one side and wiping felt surfaces on the opposite sides,said assembly adapted to be rotated by exerting downward pressure on oneof the slanting rectangular plates for dumping the refuse into thebottom of the housing, said assembly being removable as a unit from thehousing.

References Cited by the Examiner UNITED STATES PATENTS 547,925 10/1895Keuflel 89 937,175 10/1909 Rasanen 120-89 1,863,616 6/1932 Bosch 120-89FOREIGN PATENTS 1,006,972 1/1952 France.

40,193 7/1887 Germany. 714,430 12/1941 Germany.

21,869 9/1909 Great Britain. 598,678 10/1959 Italy.

52,916 12/1910 Switzerland.

EUGENE R. CAPOZIO, Primary Examiner. LAWRENCE CHARLES, Examiner.

1. IN A COMBINED PENCIL SHARPENER AND REFUSE RECEPTACLE, THE COMBINATIONOF A RECTANGULAR HOUSING HAVING BOTTOM, SIDE AND END WALLS, SAID SIDEAND END WALLS DEFINING AN OPEN TOP, SAID END WALLS HAVING NOTCHES IN THETOP EDGES THEREOF, AN ASSEMBLY OF SLANTING RECTANGULAR PLATES ROTATABLYMOUNTED AT THE TOP OF THE HOUSING INTERIORLY THEREOF, SAID MOUNTINGINCLUDING TRIANGULAR PLATES ON THE ENDS OF THE RECTANGULAR PLATES FORHOLDING SAID RECTANGULAR PLATES TOGETHER, AND TRUNNIONS EXTENDING FROMTHE TRIANGULAR